Intelligent Systems for Dispensing by Nebulisation

ABSTRACT

A system (1-9) for dispensing, in particular by nebulization, a liquid in an environment (10), this system comprising at least one dispensing device (1-4) having a settable operating parameter and configured to dispense said liquid, a plurality of sensors (6-9), a control unit (5) configured to gather a datum captured by at least one sensor of said plurality of sensors (6-9) and to adjust, based on at least said captured datum, said operating parameter of said at least one dispensing device (1-4), said plurality of sensors comprising at least one air quality sensor, this air quality sensor incorporating a suction fan configured to suck air, the air quality sensor being configured to measure the quality of the sucked air.

The present invention relates to the technical field of dispensingsystems, in particular by nebulization, of a liquid in the atmosphere ofan indoor or outdoor environment, and more particularly to themonitoring of the operation of such systems.

There are several techniques for dispensing one or several liquid(s)into the ambient air. Mention may be made of dispensing by atomization,by nebulization, or even by misting. Depending on the used products,this dispensing may aim to treat the ambient atmosphere(odorization/deodorization, disinfection, or sanitation for example), toheal (aromatherapy, dermatology), to fight against pests (disinfection,repulsion), or to improve the comfort of the ambient space (freshness,relaxation, cosmetics, or olfactory marketing, for example).

This dispensing finds application in different environments such ashealthcare premises (hospitals, clinics, spa centers), accommodationcenters, hotels, banks, living areas, points of sale, shopping centers,beauty centers, cultural premises, business centers, or industrial oragricultural production sites.

Among the dispensing techniques, that by nebulization preserves theproperties of the liquid to be dispensed and, thanks to thetransformation of this liquid into very fine light particles which canremain in suspension for a long time in the atmosphere, is relativelyeffective.

Associated with these advantages, solutions for automation andservo-control of the operation of nebulizers have also been proposed.The nebulization time and/or the intensity of this nebulization canindeed be programmed and automatically adjusted according to parametersrelating to the dispensing environment such as the temperature, thedetection of a predefined odor, or the occupancy rate of thisenvironment. The document US 2019/061466 describes a system forimproving the quality of the air inside a vehicle.

Nevertheless, these solutions of the prior art are imperfect, inparticular with respect to the relevance of the parameters taken intoconsideration for monitoring/adapting the operation of the nebulizers.An improper control of a dispensing device can cause overconsumption ofthe nebulized liquid, an overconcentration of this liquid in theatmosphere or in particular areas thereof, as well as all theconsequences that might result for the occupants or, on the contrary, aninsufficient yield does not make it possible to achieve a desiredresult.

One object of the present invention is to remedy the aforementioneddrawbacks.

Another object of the present invention is to improve the real-timemonitoring of the nebulizers according to parameters relating to theenvironment which are variable and, possibly, not foreseen in advance bya predefined dispensing program.

Another object of the present invention is to refine the control and toimprove the performance of servo-control of the dispensing devices inorder to best meet the needs of the users.

Another object of the present invention is to ensure a dispensing bynebulization adapted to the current, or even instantaneous, context inthe considered space.

Another object of the present invention is to ensure, in a specificlocation, a monitored distribution (uniform, multifaceted, homogeneousor heterogeneous for example) of a nebulized gas flow.

Another object of the present invention is to optimize the efficiency ofthe nebulizers or, more generally, of the dispensing devices.

Another object of the present invention is to improve the userexperience in a dispensing environment.

Another object of the present invention is to allow simultaneousconfiguration of a plurality of dispensing devices disposed in anenvironment, in order to produce a dynamic predefined olfactorysignature.

To this end, there is proposed a system for dispensing a liquid into anenvironment, this system comprising

at least one dispensing device having a settable operating parameter andconfigured to dispense said liquid,

a plurality of sensors comprising at least one air quality sensor,

a control unit configured to gather a datum captured by at least onesensor of said plurality of sensors and to adjust, based on at leastsaid captured datum, said operating parameter of said at least onedispensing device,

said at least one air quality sensor incorporating a suction fanconfigured to suck air according to a settable direction, said at leastone air quality sensor being configured to measure the quality of thesucked air,

the control unit being configured to adjust said operating parameterbased on at least the quality of the air sucked according to saidsettable direction.

Various additional features can be provided, alone or in combination:

the air quality sensor is an odor sensor, a gas sensor, a particlesensor, or a bacteria sensor;

said plurality of sensors further comprises an image sensor configuredto capture an image which at least partially covers the environment;

the control unit is configured to recognize an individual comprised insaid image, the control unit being further configured to adjust saidoperating parameter based on at least the recognized individual;

the control unit is configured to recognize an emotional state of anindividual comprised in said image, the control unit being furtherconfigured to adjust said operating parameter based on at least therecognized emotional state;

the control unit is configured to estimate a number of individualscomprised in said image, the control unit being further configured toadjust said operating parameter based on at least the estimated numberof individuals;

the image sensor is movable;

the image sensor is carried by an unmanned aerial vehicle or by anelectric rail vehicle;

the dispensing device comprises a blower fan configured to push in asettable direction a gas flow produced by said dispensing device.

Other features and advantages of the invention will appear more clearlyand in a concrete manner on reading the description of embodimentshereinafter, which is made with reference to the FIG. 1 whichschematically illustrates a dispensing system according to variousembodiments.

Referring to the unique FIGURE, there is schematically represented adispensing system 1-9 configured to dispense one or several liquid(s) inan environment 10.

The environment 10 is any interior, semi-interior or exterior spaceincorporating one or several area(s) where at least one liquid is to bedispensed. This environment 10 is, for example,

a point of sale with one or several floor(s) such as a pharmacy, aspecialist store, a mini-market, a mega store, a supermarket, or even ahypermarket;

a catering establishment incorporating, for example, a kitchen, a diningroom, a smoking room, a non-smoking room, toilets, a terrace and/or apremise containing food products;

a building complex such as a hospital center, a medical clinic, a spacenter, a shopping center, a business center, a waste center, ahenhouse, an industrial or agricultural production space, an airport, ora tourist, cultural, relaxation or leisure space such as a hotel or acinema;

individual or collective living area such as a private home, a livingunit, or a retirement home.

By area, it should be understood here any space of the environment 10such as an entrance, a room, a bedroom, a hall, a section, a corridor, afloor or part thereof.

The dispensing system comprises a plurality of dispensing devices 1-4disposed in the environment 10. These dispensing devices have settableoperating parameters. The dispensing system also comprises a controlunit 5 configured to monitor the operation of the dispensing devices1-4. These dispensing devices 1-4 are, under monitoring of the controlunit 5, capable of dispensing into the atmosphere, in particular bynebulization, one or several liquid(s).

Each of the dispensing devices 1-4 is in fluid communication with one orseveral container(s) comprising, respectively, a liquid intended to bedispensed in one or several area(s) of the environment 10.

A liquid intended to be dispensed by nebulization in an area of theenvironment 10, separately or in combination with others, is, forexample, a liquid with odoriferous power such as an interior perfume oran aromatic essence, water enriched with plants and/or vitamins, anessential oil, thermal water, an odor neutralizer, a medicated liquid, adeodorant, or a chemical solution with disinfectant, insecticidal,repellent, bacteriostatic, virucidal, or fungicide power.

More generally, the dispensing devices 14 transform a product, inparticular active or aromatic liquid compounds, in dry volatile microparticles behaving, in the atmosphere of the environment 10, like a gas.

In one embodiment, at least one of the dispensing devices 1-4 is anebuliser (in particular, with a venturi effect). This nebulisercomprises extraction means (such as an air compressor or an air pump)and a solenoid valve (or electrovalve) settable and controllableremotely by the control unit 5. The extraction means are capable ofextracting a liquid from a container at a given settable flow rate andpressure. The nebuliser transforms the liquid to be dispensed into amist of very fine droplets in the form of a gas flow which can be keptsuspended in the atmosphere of the environment 10.

In another embodiment, a dispensing device 1-4 incorporates a blower fanconfigured to push/propel in a given settable direction the gas flowproduced by this dispenser. This direction can be monitored by thecontrol unit 5.

The dispensing system further comprises a plurality of sensors 6-9.These sensors 6-9 are arranged to measure or capture data intended to beused by the control unit 5. These data are exploited by the control unit5 in order to adjust at least one operating parameter of the dispensingdevices 1-4.

Said plurality of sensors 6-9 comprises at least one air quality sensor.This air quality sensor makes it possible to detect the presence of atleast one predefined molecule or gas in the atmosphere of theenvironment 10 or an area thereof. In another embodiment, the airquality sensor determines the proportion of a predefined gas in thesurrounding atmosphere.

For example, this air quality sensor is a device which makes it possibleto change these physical properties following exposure to a predefinedgas. Transforming this change into a measurable electrical signalprovides information on the nature of the gases detected and possiblytheir concentrations. This air quality sensor is, for example, a metaloxide (MOX) based sensor, a polymer-based sensor, an optical sensor byinfrared detection, or a carbon nanotube-based sensor.

More generally, the air quality sensor aims to measure the quality ofthe indoor air in the environment 10. For this purpose, at least oneparticle and/or a gas in the atmosphere of the environment 10 areobserved by an air quality sensor. The gas to be detected is, forexample, a toxic gas such as carbon dioxide (CO2), or carbon monoxide(CO), formaldehyde, and/or particles suspended in the air of a physicalor biological nature. In another embodiment, the air quality sensordetects the presence or estimates the concentration in the ambient airof a predefined gas, of the carrier substance (such as water) of theactive substance dispensed in the environment 10, and/or this sameactive substance.

As non-exhaustive examples, the air quality sensor is an odor sensorknown in the state of the art by “electronic nose”, a gas sensor, aparticle sensor, a dust sensor, and/or a bacteria sensor.

In some embodiments, the air quality sensor continuously reads/capturesa sample of the gas, at a predefined frequency, or at the request of thecontrol unit 5.

The air quality sensor is separate from each of the dispensing devices1-4. The air quality sensor is installed in a different location thanthat of the dispensing devices 1-4. In one embodiment, the air qualitysensor is installed on a face opposite or, more generally, differentfrom that of a dispensing device 1-4.

The air quality sensor comprises an suction fan. This air fan isconfigured to suck or draw air in a given direction towards the airquality sensor so that the latter can measure the quality of the airsucked in that direction. The direction of the suction fan fitted to theair quality sensor is, in one embodiment, settable and, preferably,controllable by the control unit 5. This suction fan can be directional,bidirectional or omnidirectional.

Advantageously, the air quality sensor equipped with a suction fan makesit possible to obtain measurements representative of the actual qualityof the air in the area where this air quality sensor is installed.

Furthermore, by being provided with a suction fan, the air qualitysensor can be installed in different places, including in particularconfined or partially cloistered places (behind a partition out of sightor in a corner of a room for example), while being able to providerepresentative measurements (i.e. faithful to or close to reality) ofthe actual dispersion of a nebulized product or, more generally, of theair quality.

In order to cover large spaces, several air quality sensors,respectively, provided with one or several suction fan(s) may beconsidered. These air quality sensors may be disseminated in theenvironment 10 according to a predefined meshing (by floor, by room, bysection, or by area, for example).

According to the data sent back by the air quality sensor(s) associatedto an area of the environment 10, the control unit 5 adjusts at leastone operating parameter of a corresponding dispensing device 1-4 (suchas the liquid, the flow rate, the power and/or the direction ofdispensing). It follows, advantageously, that depending on a desiredresult (such as a uniform and homogeneous distribution of the gas flow,focusing on a given direction or rather the exclusion of a certaindirection), the control unit 5 adapts the control of the dispensingdevices 1-4 (by acting, in particular, on the compressors, the solenoidvalves, the orientation, and/or the blower fans of the dispensingdevices 1-4).

Advantageously, by analyzing the data provided by an air quality sensorprovided with a suction fan, the control unit 5 determines whether thequality of the air measured in a given direction/orientation of thesuction fan is different from a desired value and consequently adjustsat least one operating parameter of the dispensing devices 1-4associated beforehand to said direction of the suction fan. Thisdirection indicates, for example,

the source of a particular odor or gas (tobacco, frying, cooking, acidicodor, virus, fungi, bacteria, or germ for example) in order to focus thedispensing in that direction and allow faster neutralization of thissmell;

an axis of symmetry of an area (that of a corridor or a section forexample), the direction of entry into an area or the direction of aplace, an object or a target individual (such as a desk, a stand, a sofaor a seat for example) in order to favor dispensing in this direction;

the boundary of an environmental area 10 or a sub-area to be excluded(for example, plants or food products sensitive to the nebulized liquid)in order to restrict the dispensing in that direction.

Advantageously, measurements performed by the air quality sensors of theair quality of the air sucked according to directions delimiting an areaof the environment 10 make it possible to virtually limit the dispensingof the liquid in the atmosphere of this area. This makes it possible,for example, to locate the dispensing of a particular liquid in a targetarea of the environment 10 (a localized air treatment) such as a standin a trade fair or a section in a store (an odorization by section).

Moreover, the deployment of a plurality of air quality sensors in theenvironment 10 makes it possible to maintain a predefinedsignature/imprint (olfactory, for example) of dispensing in thisenvironment 10. This signature (or imprint) can be defined by the gasflow at different concentrations of one or several nebulized liquid(s)and cover one or several area(s) of the environment 10. Indeed, theseair quality sensors, equipped with suction fans, make it possible todetect any modification in this signature so as to enable the controlunit 5 to control the appropriate dispensing device(s) 1-4 to correctthis change. A change of this signature may be due, for example, totemperature, humidity, the number of people present, a draught in theenvironment 10 or an area thereof, or the spread of a gas. A malfunctionof a dispensing device 1-4, the exhaustion of a nebulized liquid and/orthe apparition of an obstacle interposing between the air qualitysensors and the dispensing devices 1-4 can also be at the origin of thismodification. Consequently, the control unit 5 readjusts the operatingparameters of the dispensing devices 1-4 (in particular, the flow rate,the power and/or the dispensing direction) in order to ensure thepredefined signature of the gas flow in the space of the environment 10.In this case, the control unit 5 determines a reconfiguration for eachdispensing device 1-4 concerned by the considered area of theenvironment 10 and, in real-time, controls this reconfiguration.

Also, the air quality sensors make it possible to determine whether thepower of a dispensing device 1-4 is suitable for the dimensions of thearea to be covered of the environment 10 (i.e. a dimensioning).

Moreover, the sensors 6-9 equipping the dispensing system also compriseat least one temperature and/or humidity sensor, enabling the controlunit 5 to take into account, in control of the dispensing devices 1-4,the ambient temperature and/or the humidity of the air in theenvironment 10. The temperature and humidity of the air in theatmosphere of the environment 10 influence the propagation and theability of the fine droplets to be in suspension and, consequently,their dispersion in the atmosphere of the environment 10.

The sensors 6-9 also comprise at least one image sensor (or visualsensor). This image sensor is, for example, a camera, a digital camera,a 2D/3D camera, or a 3D camera with depth detection making it possibleto capture image data relating to an area of the environment 10. Thisimage sensor allows the acquisition of still or video images integratingat least partially an area of the environment 10.

In one embodiment, one or several image sensor(s) are installed in anarea of the environment 10 so as to allow the capture of at least oneimage of an individual within this area. This capture is aimed at the(visual) recognition of an individual comprised in these images, and/orthe estimation of the number of individuals comprised in these images,and/or the recognition of an emotional state (i.e. mood such as joy,sadness, fear, disgust, a neutral state or anger for example) of anindividual comprised in these images. In other embodiments, this imagecapture also aims to recognize the sex and/or age group of an individualcomprised in acquired images.

Depending on the dimensions of the environment 10 and the extent of thefield of view of the image sensor, several image sensors may beconsidered so that the count of the individuals present in theenvironment 10 and/or the recognition of one or more of theseindividuals and/or the mood of one or more of these individuals areclose to the existing reality. Alternatively or in combination, at leastone of the image sensors is movable. Indeed, this movable image sensormay be carried by an unmanned aerial vehicle (commonly called a “drone”)or by an electric rail vehicle. An advantage of a movable image sensoris that it can cover a larger area of the environment 10.

In one embodiment, recognition of the emotional state of an individualpresent in an area of the environment 10 is estimated by the facialexpression (an emotion sensor). The acquisition of successive imagesand/or images from several image sensors advantageously makes itpossible to facilitate this recognition.

In another embodiment, an estimate of the number of individuals presentin the environment 10 is obtained using a motion sensor configured todetect the displacement and/or the entry/exit of an individual in theenvironment 10 or in an area thereof. Alternatively or in combination,the motion sensor informs the control unit 5 of any detection of motionin its coverage area in order to order the capture of an image. In someembodiments, the image sensor and, possibly, an air quality sensor arecoupled to one or several motion sensor(s), such that the detection of amotion in an area of the environment 10 automatically triggers thecapture of one or several image(s) covering this area and the analysisof the air quality in this area. Thus, the control unit 5 can ask theimage sensor for continuous or discontinuous acquisition for apredefined time correlated with the detection of motion by the motionsensor.

The control unit 5 is configured to recognize, from the data collectedfrom the image sensors, the identity or the mood of a person present inthe environment 10 and whose distinctive information have beenregistered in advance. For this purpose, the control unit 5 is providedwith a database storing information relating to one or severalindividual(s) and/or moods established in advance. This informationcomprises, for example, one or several visual model(s) for eachindividual or mood. By visual model of an individual, it should beunderstood any distinct description based on descriptors and/or visualproperties of an individual and/or mood.

Thus, a correlation can be measured between the image of an individualpresent in acquired images and prerecorded visual models in order toestimate the identity of this individual and/or his mood. This databasefurther comprises metadata relating to predefined configurations ofdispensing in the environment 10 associated with one or severalprofile(s). For this purpose, the control unit 5 comprises an imagerecognition application making it possible to extract, in the form ofattributes for example, from the acquired images of the relevantparameters and to compare these parameters (using one of the variousknown image recognition algorithms) with information, previouslymemorized, relating to a list of individuals or emotional states.Following this comparison, the image recognition application determines,up to a determined confidence index, information (identity, and/or mood,and/or sex, and/or age group, for example) relating to an individual.Depending on the information determined, the control unit controls aconfiguration of the operating parameters associated with thisinformation beforehand.

In one embodiment, the image recognition by the control unit 5advantageously comprises a deep learning model or any other model basedon an automatic learning method making it possible to recognize, with anindex (or coefficient) of confidence, an individual, an emotional stateof an individual and/or the number of individuals present in one orseveral acquired image(s). Indeed, images taken by the image sensorsunder various conditions (lighting, blackout, viewing angle for example)can be used to improve the performance of the image recognitionapplication. This allows improving the ability to recognize and identifyindividuals and/or emotional states under different lighting conditionsand with partial or complete images of individuals.

In another embodiment, the image recognition application implementsconvolutional neural networks capable of learning by themselves, fromthe acquired image data, distinctive information making it possible toestimate, by means of deep learning, information relating to anemotional state or to an individual comprised in the acquired images.

Moreover, the image recognition application applies, as it is known fromthe state of the art, face recognition algorithms, face detection andtracking algorithms and classification algorithms. This image processingmay be carried out locally by the control unit 5 and/or remotely bymeans of a remote processing server to which the control unit 5 isconnected.

Moreover, the dispensing system comprises a sensor of the level of theliquid to be nebulized (a level detector or a weight sensor) configuredto measure the level of the liquid in a container. The control unit 4monitors the level of the liquid and alerts the operator as soon as thislevel is below a predefined threshold.

The control unit 5 analyzes the data collected by sensors 6-9 andconsequently adjusts at least one operating parameter of the dispensingdevices 1-4. Indeed, according to the information gathered from thesensors 6-9, the control unit 5 determines an appropriate configurationof the dispensing devices 1-4 making it possible to achieve a targetnebulization objective (making an olfactory imprint, treating a toxicsubstance or malodorous air, for example). The control unit 5 is thenresponsible for implementing this configuration.

In one embodiment, the determination by the control unit 5 of theoperating parameters of the dispensing devices 1-4 takes intoconsideration, in addition to the information produced by the sensors1-4 (air quality, image data), the previously determined operatingparameters. The control unit 5 can indeed use the history of theoperating parameters of the dispensing devices 1-4 to determine those tobe controlled in response to information received from the sensors 6-9,or to anticipate a subsequent configuration of one or several dispensingdevice(s) 1-4.

The control unit 5 monitors (i.e. programs, commands,activates/deactivates or more generally modifies any settable operatingparameter of a dispensing device) the dispensing devices 1-4 so as toselect, according to the data provided by the sensors 6-9 and/or by anoperator, the liquid to be dispensed, the flow 1 s rate, the power, thefrequency and the direction of nebulization.

The control unit 5 comprises at least one wireless or wiredcommunications interface (via a local network for example) enabling itscommunication, directly or indirectly, with the dispensing devices 1-4,the sensors 6-9, a programming user terminal and/or a local or remoteserver. This server is, for example, a processing server, a Web serverand/or a “Push” notification server. A wireless communication interfaceis, for example, a Bluetooth®, HomeRF®, ZigBee, Infra-red (IR), WiFi®,WiMax® interface, or an advanced universal network interface forterrestrial radio access (such as 3G, 4G or 5G for example).

In one embodiment, the control unit 5 can be operated by the userprogramming terminal (such as a computer, a tablet, or a smartphone)making it possible to intervene on the operation of the differentmodules of the dispensing system 1-9 and the implementation of aparticular configuration of the dispensing system defined by anoperator.

More generally, the control unit 5 is any hardware and/or softwareentity (of the type comprising a programmable logic controller or aprocessor, a memory, computer buses and various electronic componentsserving as a support for the execution of computing programs) capable ofacquiring data and integrating functionalities allowing theimplementation of a data processing method. The control unit 5 is, inone embodiment, a computerized management module, making it possible tomanage several dispensing devices 1-4 deployed in the environment 10based on data gathered from sensors 6-9 and/or provided by an operator.

In one embodiment, the control unit 5 notifies a user terminal (forexample, a mobile application installed on a mobile terminal) ofinformation/alerts concerning the dispensing system (level of theliquids in the containers, performance of the dispensing devices, themost/least used dispensing device, the data gathered from the sensors6-9, confirming an individual determined with a confidence index below apredefined value, modification/addition of a profile of an individual towhich is associated a nebulization signature).

The dispensing system according to the various embodiments describedhereinabove is considered to be “smart” to the extent that the operatingparameters of each of the dispensing devices 1-4 are automaticallyupdated (automatic self-regulation) to ensure a predefined nebulizationsignature capable of varying over time and space. Thus, it is possibleto create a dynamic olfactory ambience or a dynamic imprint such that adispensing that follows an individual in his movement in the consideredspace and/or adapts to his emotional state.

In an illustrative implementation, the environment 10 is a house. Thedispensing system comprises, in this case, at least one dispensingdevice capable of being connected to a plurality of containers. Thesecontainers comprise, respectively, a liquid intended to be nebulized.These containers are, for example, a first bottle containing a roomfragrance, a second bottle containing an odor neutralizer, a thirdbottle containing a relaxing essential oil and a fourth bottlecontaining an essential oil to facilitate falling asleep. Depending onthe identity of the individual and/or his mood and/or his age estimatedby the control unit 5 from the image data gathered from at least oneimage sensor, the control unit 5 controls the connection of said atleast one dispensing device to one of the aforementioned containers andadjusts its operating parameters (nebulization time, frequency, power,orientation of the blower fan, for example) in accordance with apredefined configuration. Depending on the measurements made by at leastone air quality sensor, the control unit 5 readjusts at least oneoperating parameter of the dispensing devices so as to achieve apredefined imprint of the nebulized liquid. This imprint of thenebulized liquid varies in the space of the house (corridors, rooms,living room, bathroom, kitchen, toilets), overtime (time of day or dayof the week for example) and according to data provided by sensors 6-9(mood, individuals and/or air quality for example).

For example, if the individual's emotional state is “bored”, the controlunit controls the dispensing devices 1-4 so as to produce an ambienceassociated with this mood beforehand. In this respect, the third bottleis, in one embodiment, selected and at least one dispensing device isactivated at predefined dispensing powers and directions. Of course, inview of the geometry of the room and the position in which thedispensing device is installed, this power can be variable depending onthe direction of dispensing. The operating parameters of the dispensingdevice are readjusted according to the data sent back by one or severalpredefined air quality sensor(s). The detection of a predefined gas orodor triggers, for example, the use of the second bottle by anotherdispensing device or in place of the third cylinder until attenuation orneutralization of the detected gas or odor.

In another example, a dispensing signature (i.e. the container and/orthe dispensing devices with their respective operating parameters) isdetermined based on user preferences previously informed to the controlunit 5.

Advantageously, the servo-control described hereinabove results in acontrolled dispensing in accordance with and adjusted to changes in thedispensing environment (volume, air quality, signature, occupancy,context, presence of individuals, emotional state).

Advantageously, the controlled dispensing system described hereinaboveallows continuous and fine readjustment/setting of the dispensingdevices in order to best approximate a predefined signature:

automatically treats the ambient atmosphere according to the currentcontext in that environment without requiring user intervention;

allows, by means of air quality sensors, monitoring of the air qualityin the atmosphere of the environment 10;

allows, by means of image sensors, monitoring of the mood of anindividual and/or the number of individuals present in this environment10;

improves the user experience in the environment 10;

ensures a controlled distribution into a plurality of adjacent or remoteareas of nebulized liquids in the atmosphere of the environment 10;

adapts to the person and his environment (VIP, elderly, mood, time ofday, for example);

allows responding/reacting to scenarios that cannot be foreseen inadvance by a predefined static dispensing program,

allows, starting from a first arrangement of the dispensing deviceswithin the environment 10, optimizing this arrangement with the effectof ensuring in the best way a predefined dispensing imprint.

Although the dispensing system is described hereinabove with respect toembodiments and variants, those skilled in the art will understand thatthese embodiments and variants are not restrictive and can be combinedwith each other and/or with any other equivalent embodiment.

1. A system for dispensing a liquid in an environment, this systemcomprising at least one dispensing device having a settable operatingparameter and configured to dispense said liquid, a plurality of sensorscomprising at least one air quality sensor, a control unit configured togather a datum captured by at least one sensor of said plurality ofsensors and to adjust, based on at least said captured datum, saidoperating parameter of said at least one dispensing device, wherein saidat least one air quality sensor incorporates a suction fan configured tosuck air according to a settable direction, said at least one airquality sensor being configured to measure the quality of the suckedair, the control unit is configured to adjust said operating parameterbased on at least the quality of the air sucked according to saidsettable direction.
 2. The system according to claim 1, wherein the airquality sensor is an odor sensor, a gas sensor, a particle sensor, or abacteria sensor.
 3. The system according to claim 1, wherein saidplurality of sensors further comprises an image sensor configured tocapture an image which at least partially covers the environment.
 4. Thesystem according to claim 3, wherein the control unit is configured torecognize an individual comprised in said image, the control unit beingfurther configured to adjust said operating parameter based on at leastthe recognized individual.
 5. The system according to claim 3, whereinthe control unit is configured to recognize an emotional state of anindividual comprised in said image, the control unit being furtherconfigured to adjust said operating parameter based on at least therecognized emotional state.
 6. The system according to claim 3, whereinthe control unit is configured to estimate a number of individualscomprised in said image, the control unit being further configured toadjust said operating parameter based on at least the estimated numberof individuals.
 7. The system according to claim 3, wherein the imagesensor is movable.
 8. The system according to claim 7, furthercomprising an unmanned aerial vehicle or an electric rail vehicle, theimage sensor being carried by the unmanned aerial vehicle or by theelectric rail vehicle.
 9. The system according to claim 1, wherein thedispensing device comprises a blower fan configured to push in asettable direction a gas flow produced by said dispensing device.